D-Link DI-106 Series Guida all'installazione

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 1

D-Link Router Family Frequently Asked Questions (FAQ)

Part I: General Product Overview Questions

1. What is the Router product family?

The Router family of products are a set of multiprotocol remote

access routers that deliver a feature-rich, reliable, and secure

interconnection between your LAN and the remote network such as

Internet or Corporate network via ISDN. The Router product’s

unique features make the interconnection flexible and easy to

upgrade. Router supports IP routing, IPX routing, and

Transparent Bridging. It supports Ethernet, ISDN, and POTS port.

Router can be managed via either RS-232 or Telnet. Its menu-

driven System Management Terminal provides an easy-to-use

interface.

2. What ISDN switches and B Channel protocols are supported by the

Router?

The Router supports the following ISDN switches:

European switches:

DSS1 (also used in other countries)

1TR6

North American switches:

AT&T: NI1, Point-to-Point, Point to Multipoint

Northern Telecom DMS100: NI1, Custom

The Router supports the PPP protocol in the B channels.

3. What are some of the major applications for the Router?

Some of the major applications of the Router include:

Internet Access

The Router can be set up to access the Internet in 15 minutes.

In addition, the Router provides an economic way for small office

to connect to Internet (see Subject 8 for Internet Single User

Account).

LAN-to-LAN Connection

The Router can dial to or answer calls from another remote access

router connected to a different network. The Router supports

TCP/IP, Novell IPX routing and has the capability to bridge any

Ethernet protocol.

Telecommuting Server

The Router allows remote users to dial-in and gain access to your

LAN. This feature enables users that have workstations with

remote access capabilities, e.g., Windows 95, to access the

network resources without physically being in the office.

4. What are the benefits of the Router over other vendors’

products?

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 2

The Router incorporates features not present on most of their

competitors' products.

Internet Single User Account (SUA) Support

Please see Subject 9 for details.

Multiprotocol Router

The Router is the only remote access router supporting IP

Routing, IPX routing, and Transparent Bridge.

Telecommuting Server

In addition to providing both ISDN and modem access for remote

users, the Router also support dynamic IP address assignment and

Windows 95 compatibility. This makes the Router an ideal product

for serving Windows 95 telecommuter and mobile users. The Router

offers support for these accounts that will allow multiple users

on the LAN (Local Area Network) to access the Internet

concurrently for the cost of a single user.

5. What other Remote Access Servers are compatible with the Router?

The Router has successfully gone through PPP MP compatibility

tests with 30+ vendors in October, 1996 at Pacific Bell.

Furthermore, the Router has been tested extensively with Cisco

routers and Ascend routers (both Max and Pipeline).

6. How to do factory reset for the router?

There is a file called “default.cfg” which be included with

shipping diskette. Use this file to restore to the factory

setting. Select SMT Menu 24.6 'Restore Configuration' and

transfer this file by X-modem file transfer. After file download

complete, the router is in factory setting.

Part II: Application Setup Questions

1. What does my computer need to connect to the Router?

You will need an ethernet card that supports a 10baseT (RJ-45

jack) ethernet interface.

If you intend to connect your computer directly to the Router

without a hub in between, you will need to use a ‘crossover’

cable and a 10baseT ethernet card. The ‘crossover’ cable is a 4-

pair RJ-45 cable with pins #1 and #3 swapped, and pins #2 and #6

swapped.

To initially configure your Router, you need to have an RS-232

cable and a communications program on your computer.

In order to access the WAN (Wide Area Network) on the Router's

ISDN connection, you need to have a Ethernet connection in your

computer.

2. How can I remotely configure my Router using a modem?

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 3

You can configure your Router remotely through a modem call.

This setup requires an external ‘local’ modem.

Local Remote

v v

[Router]--[Null Modem]-[Modem]--(phone line)--[Modem]-[Computer]

RS-232 Cable

The procedure for this setting up this application is as follows:

- Set the modem on the ‘local’ end to IGNORE DTR

- Set the modem on the ‘local’ end to Auto Answer (ATS0=1)

- Set the Router Port Speed (menu 24.2) to be 19200 if the

‘local’ modem is a 14.4K, and 38400 if it is faster (

28.8K+)

- Dial the ‘local’ modem with the ‘remote’ modem.

3. How can I set up my Router as an Internet Firewall?

The Router has easily customizable filter sets that you can use

to set it up as an Internet Firewall. To do this, set the

filters to do the following:

Allow ARP/ICMP/PING packets

Allow TCP/UDP traffic to ports > 1023

Allow HTTP, SMTP, NNTP, DNS

Block everything else inbound from the Internet

Here's an example in Router:

A branch office wants to allow all Packet from headquarter

through Internet, but would like to setup a Internet firewall to

block other intrusion:

a. Allow all packets from headquarter 192.168.1.0/24 network

Menu 21.1.1 - TCP/IP Filter Rule

Filter #: 1,1

Filter Type= TCP/IP Filter Rule

Active= Yes

IP Protocol= 0 IP Source Route= No

Destination: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 0

Port # Comp= None

Source: IP Addr= 192.168.1.0

IP Mask= 255.255.255.0

Port #= 0

Port # Comp= None

TCP Estab= N/A

More= No Log= None

Action Matched= Forward

^^^^^^^^

Action Not Matched= Check Next Rule

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 4

b. Allow ICMP (including PING)

Menu 21.1.2 - TCP/IP Filter Rule

Filter #: 1,2

Filter Type= TCP/IP Filter Rule

Active= Yes

IP Protocol= 1 IP Source Route= No

^^^^^^^^^^^^^^^

Destination: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 0

Port # Comp= None

Source: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 0

Port # Comp= None

TCP Estab= N/A

More= No Log= None

Action Matched= Forward

^^^^^^^^

Action Not Matched= Check Next Rule

c. Allow UDP traffic to ports > 1023

Menu 21.1.3 - TCP/IP Filter Rule

Filter #: 1,3

Filter Type= TCP/IP Filter Rule

Active= Yes

IP Protocol= 17 IP Source Route= No

^^^^^^^^^^^^^^^

Destination: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 1023

^^^^

Port # Comp= Greater

^^^^^^^

Source: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 0

Port # Comp= None

TCP Estab= N/A

More= No Log= None

Action Matched= Forward

^^^^^^^

Action Not Matched= Check Next Rule

d. Allow TCP for ports > 1023, and drop all other packets.

Menu 21.1.4 - TCP/IP Filter Rule

Filter #: 1,4

Filter Type= TCP/IP Filter Rule

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 5

Active= Yes

IP Protocol= 6 IP Source Route= No

^^^^^^^^^^^^^^^

Destination: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 1023

^^^^

Port # Comp= Greater

^^^^^^^

Source: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 0

Port # Comp= None

TCP Estab= No

More= No Log= None

Action Matched= Forward

^^^^^^^

Action Not Matched= Drop <== This is IMPORTANT!!

^^^^

e. The Menu 21.1 will look like

Menu 21.1 - Filter Rules Summary

# A Type Filter Rules M m n

- - ---- ------------------------------------------------------------------- - - -

1 Y IP Pr=0, SA=192.168.1.0, DA=0.0.0.0 N F N

2 Y IP Pr=1, SA=0.0.0.0, DA=0.0.0.0 N F N

3 Y IP Pr=17, SA=0.0.0.0, DA=0.0.0.0, DP>1023 N F N

4 Y IP Pr=6, SA=0.0.0.0, DA=0.0.0.0, DP>1023 N F D

5 N

6 N

f. Plug it to Menu 11.1 Input Filter Sets.

g. If you have any server application running inside of your

network, such as Domain Name Server, then you need to insert

another filter before rule 4. For DNS, the filter rule will

look like the following:

Menu 21.1.4 - TCP/IP Filter Rule

Filter #: 1,4

Filter Type= TCP/IP Filter Rule

Active= Yes

IP Protocol= 17 IP Source Route= No

^^^^^^^^^^^^^^^

Destination: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 53

Port # Comp= Equal

^^^^^

Source: IP Addr= 0.0.0.0

IP Mask= 0.0.0.0

Port #= 0

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 6

Port # Comp= None

TCP Estab= No

More= No Log= None

Action Matched= Forward

^^^^^^^

Action Not Matched= Check Next Rule

h. The your Menu 21.1 will look like

Menu 21.1 - Filter Rules Summary

# A Type Filter Rules M m n

- - ---- ------------------------------------------------------------------- - - -

1 Y IP Pr=0, SA=192.168.1.0, DA=0.0.0.0 N F N

2 Y IP Pr=1, SA=0.0.0.0, DA=0.0.0.0 N F N

3 Y IP Pr=17, SA=0.0.0.0, DA=0.0.0.0, DP>1023 N F N

4 Y IP Pr=17, SA=0.0.0.0, DP=53, DA=0.0.0.0 N F N

5 Y IP Pr=6, SA=0.0.0.0, DA=0.0.0.0, DP>1023 N F D

6 N

i. Sometimes Internet application such as vedio conference need to

use the UDP server port, then you have to be careful in setting

up the firewall filter.

4. How do I configure the Router as a Remote Access Server?

Configuring the Router is made simple by the SMT (System Management Terminal), a menu

driven user interface. To configure the Router for use as a Remote Access Server, follow these

steps.

4.a Windows 95 Remote User

Configure all the necessary parameters in Menu 13 for the Windows 95 Remote User. Then add a

Remote User by configuring Menu 14. For a more detailed description of these Menus, please see

the Router User's Manual.

4.b Other PPP Packages

The Router is compatible with many other PPP packages running in various platforms such as

Windows 3.1x, Mac, Unix. Please check with D-Link on the compatibility list.

5. How do I configure my Router for my applications?

5.a Internet Access

My-net

O--|

|---[Router]---------( ISP )

O--| ^ ^ ^

| A A C

The Router can allow multiple hosts on the LAN (My-net) to access the Internet through an ISP

(Internet Service Provider). In this configuration, the Router is assigned a unique Ethernet IP

address on ‘My-net’ (A). This address (A) will be also used to negotiate the connection with the

ISP. Note that the IP address on ‘My-net’ are not hidden from the ISP and the rest of the Internet.

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 7

In Menu 1:

-Set Route IP to ‘Yes’.

In Menu 3.2:

- Set IP Address to an address on ‘My-net’ (A).

In Menu 4:

- Set ISP IP Addr to ‘C’.

- Make sure Single User Account is set to ‘No’.

In order for the nodes on ‘My-net’ to access the Internet, they

need to have two items configured. First, the should set their

‘default gateway’ to the IP address of the Router (A). Second,

they need to set their Domain Name Server address. If the LAN

has a DNS present, use this address. Otherwise, you will have to

obtain the DNS IP address from the ISP (not C).

5.b Internet Access with SUA

My-net

O--|

|---[Router]---------(ISP)

O--| ^ ^ ^

| A B C

The Router allows multiple hosts on the LAN (My-net) to share a

single IP address in the Internet. This address will be assigned

by your ISP and is indicated in the above diagram by ‘B’. Note

that the IP addresses on ‘My-net’ are hidden from the ISP and the

rest of the Internet.

In Menu 1:

- Set Route IP to ‘Yes’.

In Menu 3.2:

- Set IP Address to an address on ‘My-net’ (A).

In Menu 4:

- Set ISP IP Addr to ‘C’.

- Set Single User Account to ‘Yes’.

- Set Single User Account: IP Addr to ‘B’. If the ISP

assigns this address dynamically, leave this field blank or

enter ‘0.0.0.0’

- Set Single User Account: Server IP Addr to the IP address

of a server station on ‘My-net’. If the LAN has a Domain Name

Server (DNS) station on it, the IP address of that station

must be entered in this field (otherwise, this field is not

required).

In order for the nodes on ‘My-net’ to access the Internet, they

need to have two items configured. First, the should set their

‘default gateway’ to the LAN IP address of the Router (A).

Second, they need to set their Domain Name Server address. If

the LAN has a DNS present, use this address. Otherwise, you will

have to obtain the DNS IP address from the ISP (not C).

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 8

5.c LAN to LAN for TCP/IP

My-net Rem-net

| |

O--| |--O

|---[Router]-----------[ISDN Router]---|

O--| ^ ^ |--O

| A B |

The Router can allow multiple hosts on the LAN (My-net) to access

a remote network’s resources. In this configuration, the Router

is assigned a unique Ethernet IP address on ‘My-net’ (A).

Similarly, the remote ISDN router is issued a unique Ehternet IP

address on ‘Rem-net’ (B). These addresses (A and B) will be also

used to negotiate the connection between ‘My-net’ and ‘Rem-net’.

In Menu 1:

- Set Route IP to ‘Yes’.

In Menu 3.2:

- Set IP Address to an address on ‘My-net’ (A).

In Menu 11.1:

- Set Route to ‘IP’.

- Set Rem IP Addr to the IP address of the remote ISDN router

(B).

- Select ‘Yes’ to editing the IP options.

In Menu 11.3:

- Set Rem Subnet Mask to the subnet mask for the remote

network.

The remote ISDN router (Cisco, Ascend...etc.) will have to

complete similar configuration changes in order to talk to the

Router.

5.d LAN to LAN for IPX

1. Router on the NetWare server side

My-net Rem-net

| |

O--| |--O

|---[Router]-----------[ISDN Router]---|

O--| ^ ^ |--O

^ | A B | ^

| |

NetWare NetWare

Server Client

The Router can accept calls from a remote router to

negotiate IPX routing. In this configuration, the stations

on the remote network (Rem-net) will have access to the IPX

network resources available on ‘My-net’ and vice versa.

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 9

In Menu 1:

- Set Route IPX to ‘Yes’.

In Menu 3.3:

- Determine what frame type the client and server(s)

stations are using and set the appropriate frame type

to ‘Yes’. The Router will not be able to

communicate with the nodes unless the frame types are

the same.

- Set Seed Router to ‘No’. The Router will obtain the

network numbers from the RIP broadcasts across the

LAN.

In Menu 11.1:

- Set Call Direction to ‘Incoming’.

- Set Route to ‘IPX’, and select ‘Yes’ to editing the

IPX options.

In Menu 11.3:

- Set Dial-On-Query to ‘No’.

- Set Rem LAN Net # to the external network number of

the remote network (B).

The remote ISDN router (Cisco, Ascend...etc.) will have to

complete similar configuration changes in order to talk to

the Router.

2. Router on the NetWare client side

My-net Rem-net

| |

O--| |--O

|---[Router]-----------[ISDN Router]---|

O--| ^ ^ |--O

^ | A B | ^

| |

NetWare NetWare

Client Server

The Router can place calls to a remote ISDN router to

negotiate IPX routing. In this configuration, the stations

on the LAN (My-net) will have access to the IPX NetWare

server and other network resources available on ‘Rem-net’

and vice versa. Note that in this setup, there is no

NetWare server on ‘My-net’.

In Menu 1:

- Set Route IPX to ‘Yes’.

In Menu 3.3:

- Determine what frame type the client station(s) are

using and set the appropriate frame type to ‘Yes’.

The Router will not be able to communicate with the

nodes unless the frame types are the same.

- Set Seed Router to ‘Yes’.

In Menu 11.1:

D-Link Co.,_______________________________________________________________________ FAQ

FAQ: 10

- Set Call Direction to ‘Outgoing’.

- Set Route to ‘IPX’, and select ‘Yes’ to editing the

IPX options.

In Menu 11.3:

- Set Dial-On-Query to ‘Yes’.

- Set Rem LAN Net # to the internal network number of

the remote NetWare server.

The remote ISDN router (Cisco, Ascend...etc.) will have to

complete similar configuration changes in order to talk to

the Router.

3. NetWare servers on both sides of the link

My-net Rem-net

| |

O--| |--O

|---[Router]-----------[ISDN Router]---|

O--| ^ ^ |--O

^ | A B | ^

| |

NetWare NetWare-+

Server = Server_1 Server = erver_2

Net number = 111 Net number = 222

The Router can place calls to a remote ISDN router to

negotiate IPX routing. In this configuration, the stations

on the LAN (My-net) will have access to the IPX NetWare

server on their own network. If the client stations on

‘My-net’ want to access the remote NetWare server

(Server_2), then they will need to configure a static route

for that Router.

In Menu 1:

- Set Route IPX to ‘Yes’.

In Menu 3.3:

- Determine what frame type the client station(s) are

using and set the appropriate frame type to ‘Yes’.

The Router will not be able to communicate with the

nodes unless the frame types are the same.

- Set Seed Router to ‘No’.

In Menu 11.1:

- Set Call Direction to ‘Outgoing’.

- Set Route to ‘IPX’, and select ‘Yes’ to editing the

IPX options.

In Menu 11.3:

- Set Dial-On-Query to ‘Yes’.

- Set Rem LAN Net # to the external network number of

the remote network (B).

In Menu 12.2

- Set Server Name to ‘Server_2’ (The name configured

for the server).

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